Not talking about clunkiness of rotations or fun or subjective things, talking about measurable performance. This is only through BFA, but it is pretty consistent:
https://docs.google.com/spreadsheets...wiQ/edit#gid=0
And this is just shadow - priest is a class, not a spec, and Disc is historically one of the strongest healing specs in the game for 10+ years running, with only a few mediocre tiers.
But even just for shadow, can you think of a single hybrid dps spec that is consistently better? Balance is often good but also has a lot of bad spots; elemental is almost never better than shadow; Ret/Feral we don't even need to ask; Windwalker/Havoc are brought for the buff, but again aren't super consistent in raids; DPS warrior always gets a slot; DKS...totally depends. Who among those has it consistently better than shadow? Certainly not many, possibly not any!
Shadow is also almost always better than 2/3 of the pure DPS class specs, and often better than all 3 for at least one or two pure dps classes per tier.
Like I'm sorry, but there is no data to support shadow in specific or priests in general being a poorly treated class. It is one of the most consistently good classes in the game across all content for the entire history of the game.
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Yeah I don't necessarily most with any of this*. I think specific criticisms of the tree are perfectly valid and justified, especially around these issues.
Just this is a separate point than this hilarious whining about being the redheaded stepchild of the developers which is obviously not true.
*The last point I think is completely wrong. Double PI is insanely powerful and priests get it for free, along with MD and no AE mind soothe. Shadow is going to be in a better spot purely because of that.
Healers I think will really depend on tuning. If holy does good damage with Empyreal blaze etc it will probably be fine, since damage is typically what matters for m+ healing.